Hi @hafidz, i agree with @petrassib that communication is key in relationships.
Relationships should not be a source of stress in life! It is a tool to deal with life’s stresses.
It sounds very bad that she is threatening with breakup. What is her reason for doing it? Maybe give her a taste of her own medicine and do break up for some time?
Something along the lines of “I don’t accept you using these threats. I care about our relationship very much, but if you use this again, I will break up with you, and you will be the reason”
Make it clear to her that you are not for granted.
It sounds very unfair that she does this, and maybe she is not appreciating you enough. A relationship should not be one-sided.
In a relationship, when you two are fighting, you both need to remember that it’s you two vs the problem and not you vs them
Please keep in mind that I don’t know your relationship and what I write may not apply to you. I’m giving you food for thought.
Hope this helps! Best of luck!